You may also want to install JUnit Library to be able to debug your applications.

To install JUnit follow the instructions:

Download JUnit4.x.jar from the JUnit website . The download contains a "junit-4.*.jar" which is the JUnit library.

To make JUnit available in your Java project you have to add the the JUnit library file to your Java classpath. (If you do not know how to do it, please use this Eclipse tutorial to learn how to add jar files to your Eclipse project).